18226262 has 12 divisors (see below), whose sum is σ = 27639540. Its totient is φ = 9014148.

The previous prime is 18226259. The next prime is 18226277. The reversal of 18226262 is 26262281.

It is a super-4 number, since 4×18226262⁴ (a number of 30 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20789 + ... + 21647.

It is an arithmetic number, because the mean of its divisors is an integer number (2303295).

Almost surely, 2^18226262 is an apocalyptic number.

18226262 is a deficient number, since it is larger than the sum of its proper divisors (9413278).

18226262 is an equidigital number, since it uses as much as digits as its factorization.

18226262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067 (or 964 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 18226262 is about 4269.2226458689. Note that the first 3 decimals coincide. The cubic root of 18226262 is about 263.1676705547.

The spelling of 18226262 in words is "eighteen million, two hundred twenty-six thousand, two hundred sixty-two".